I used to be quite underweight according to the BMi scale and I know quite abit about the medical sciences, I think there's only a hint of truth in that statement.

While it's possible that there is an underlying problem in digestion (not enough enzymes for the breakdown of specific food types maybe), these sort of malabsorption problems tend to present themselves with other symptoms as well e.g. fatigue and lethargy and other symptoms associated with malnutrition (getting infections alot etc.).

However, most of these "proud" people who say they can eat a lot *usually* have very different definitions of what *alot* means. I always thought I was skinny because I had a higher metabolism than my bigger sized peers. Maybe one or two meals I have with them I notice that I eat the same portion as they do and yet I'm half their weight and I jump to this conclusion: However, when I started living with people bigger than me, I noticed that they consistently had much larger meals than I had.

So tl'dr, if you're perfectly healthy but skinny, chances are that you're probably not really eating as much as you think you are.


I was 54kg at 179cm after NS so my friends thought something was terribly wrong with me. Now I'm 72kg at the same height with roughly the same body fat % as I did before, and I have the LYN forums to thank for alot of my progress haha.

(Disclaimer: If you are really sure that you're eating plenty yet not gaining weight, there's no harm that can come by paying a visit to the GP. Also, a dietitian might be of great help here)